I just started learning HTML5, I started with normal text file and changed its extension to .html and added the below code.
<!DOCTYPE HTML>
<html>
<body>
<video width="320" height="240" controls="controls">
<source src="D:\Movies\Troy (2004).avi" type="video/avi" />
Your browser does not support the video tag.
</video>
</body>
</html>
I am using FireFox 4.0.
Firefox doesn’t support the avi container format